Tail-pipe extension



FIG. 1 is a perspective view of a tail-pipe extension showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side appearing identical;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is an end elevational view of the tail-pipe extension of FIG. 1; and,

FIG. 6 is an end elevational view of the opposite end shown in FIG. 5. 

The ornamental design for a tail-pipe extension, as shown and described. 